The invention provides a solar thermoelectric power generation and 
air water taking integration device applied to small islands and reefs, which comprises a trough 
solar energy heat collection unit, an integrated main unit, an automatic water supplementing unit, a humidifying and pre-cooling unit and a 
power storage and supply unit, wherein the trough 
solar energy heat collection unit is used forheating a 
heat transfer medium to enable the 
heat transfer medium to rise in temperature and keeping a preset temperature; the integrated main unit is used for thermoelectric power generation and airwater taking; the automatic water supplementing unit is used for supplementing 
seawater evaporation in an 
open water tank; the humidifying and pre-cooling unit is used for enabling wet air coming froma humidifying chamber and non-condensable air coming from a condensation chamber to carry out heat exchange and pre-cooling in a pre-cooler; and the 
power storage and supply unit stores 
electric energy generated by thermoelectric power generation in a 
power storage device and is used for supplying power to 
electrical equipment on the small islands and reefs and serving as an 
electric energy source of condensation water taking at night. The solar thermoelectric power generation and 
air water taking integration device carries out 
solar energy thermoelectric power generation by using a Seebeck effect during the day and stores the generated 
electric energy into the power storage device; and the 
air humidity turns high at night, the wet air is condensed by using a Peltier effect to provide 
fresh water. The solar thermoelectric power generation and 
air water taking integration device is clean and 
pollution-free, and has important significance for marine 
ecology and environment protection.